ANGEL NO OKA Manga

The story revolves around a mysterious place called "Angel's Island" that resides somewhere on the ocean seas. Living on Angel's Island are a species of merpeople that can live in both the sea and on land. They have the form of a human, but can breath in water as well as on land. Luna is a princess of this species of mermaid living on Angel's Island, but is exiled for breaking some of their rules. As punishment, she is placed inside a sea shell, and set adrift across the sea. Meanwhile Eiji Kusahara, the son of a wealthy Japanese family, meets Soleiu (Luna's older sister) and they try to discover the mysteries behind Angel's Island.

The series Angel no Oka has been licensed, it is not available in Manga Fox.